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Patent Searching and Data


Title:
SURFACE-TREATED ZINC-COATED STEEL SHEET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2016/203703
Kind Code:
A1
Abstract:
Provided is a surface-treated zinc-coated steel sheet which can exhibit excellent resistance to darkening even after being subjected to a severe ironing process such as a continuous high-speed press molding process and has excellent oil repellency. A surface-treated zinc-coated steel sheet provided with a zinc-coated steel sheet and a surface-treated coating film that is formed on the surface of the zinc-coated steel sheet and contains fluororesin particles, wherein a molten fluororesin region, which is formed as the result of the melting of the fluororesin particles, exists on the surface-treated coating film at an area ratio of 40% or more relative to the whole area of the surface-treated coating film, and the number density of unmolten fluororesin particles in the molten fluororesin region is 50 particles/10 μm2 or less.

Inventors:
TANDOKORO KOHEI (JP)
NAKAMICHI HARUO (JP)
OKUMURA YUSUKE (JP)
OKAI KAZUHISA (JP)
Application Number:
PCT/JP2016/002389
Publication Date:
December 22, 2016
Filing Date:
May 16, 2016
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
C23C28/00; C23C2/06; C23C26/00
Foreign References:
JPH05132646A1993-05-28
JP2003025488A2003-01-29
JP2001316850A2001-11-16
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
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